Slotting machine



LE RY E. JOLLS.

=.SLOTTING MACHINE. APPLICATION HLED MAY 8.1918.

1,434,615, Patented Nov. 7, 1922i 72 4 SHEETS-sum l 9 l Afky afl OILPUMP LE ROY E. JOLLS. SLOTTING MACHINE. APPLICATION FILED MAY B. I9Is.

1,434,615. v muted Nov. 7,1922.

4 SHEETS-SHEET 2.

0 IIIIIIIIIIIIII /Z LE ROY E. JOLL'S. SLQTTING MACHINE. APPLICATION FILED MAY a. Ism.

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Patented Nov. 7,1922.

LE ROY E. JOLLS.

Patented Nov. 7, 1922.

4 SHEETS-SHEE 4'.

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narran srarss Partnr oreicr..

LE ROY E. JOLLS, 0F DETROIT, MICHIGAN, ASSIGNOR TO PACKARD I1IOTOR CAR COMPANY, OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

SLOTTING MACHINE.

Application led May 8,

Be it known that l, Ln Hor E. JoLLs, a citizen ot the United States, and resident oit Detroit, lWayne County, State of MichiganI1 have invented certain new and useful linprovements in blotting` Machines, of which the tollowing is a specilication.

llhis invention relates to slotting machines and particularly to machines for c astellating nuts. The particular machine illustrated in this application is designed as an improvement upon the machine forming the subject matter ot an application ot ll'erbert Si. Jones, Serial No. 232,834.

One or' the objects of the present invention is to provide a rigid support and uniform driving mechanism 'tor the cutters ot a slottinr.' machine.

Another object of the invention is to provide a more rigid work tahle support and og'ierating mechanism.

Another object of the invention is to provide a novel work table lifting mechanism.

Another object oi the invention is to provide a machine of the class referred to with a work ejecting means of novel form.

Another object of the invention .is to provide novel and eilicient work feeding and clamping mechanisms.

Other objects oi the invention will appear 'roin the ,tollo'wing description taken in connection with the d'rzm'ii'igs, which vtorni a part ol' this specilication, and in which:

iig. l is a: side elevation ot a mzuhine embodying the invention.A parts being broken away to show the internal construction;

Fig. 2 is a vertical section sul'istantially on the line 2 2 of Fig. l;

VFig. 3 is a plan view of the machine shown in Figs. l and 2;

Fig. if is a detail plan. view of the work table and adjacent parts of the machine;

Fig. 5 is a detail sectional view ot a nut clamping device g Fig. (3 is an enlarged vertical sectional view showing the nut ejecting means;

Fig. "T is a horizontal sectional view through the machine on the line 7-7 ot Fig. 2:

l `igs- 51. 9 and l0 illustrate three. positions ot the various parts of the nut feeding mechanism;

Fig. ll. is an enlarged transverse Section through the feeding magazine on the line ll ll ot Fig. S; and

lFig. l2 is an enlarged underneath view of the nut feeding mechanism shown in Fig. S, with parts broken away.

Referring to the drawings, 20 represents the base of the machine and 2l is a large hollow tramejnounted upon the hase and forming the principal support for the operating mechanism.

in the present form of the machine the movable work table is rotatably mounted and it is likewise adapted to be reciprocated to feed the work toward and from the cutters. The table proper is indicated at 22 and it is in the form of a cylindrical plate horizontally arranged and having a central tapered trunniion 23 mounted for rotation in a table support 24. The latter has a central body portion 25 and an upper plate portion 2C, the latter being arranged heneath the table and having a filler block or plate 27 thereon arranged between its upper sui-'tace and the lower surface ot the table 22. The support- 24C is mounted in a part 24 o't the trame ot the machine so that it may he reciprocated vertically therein. and a key 241 Aprevents the support trom Ilm-ning about its axis. Y

The table 22 is formed with a boss 28 which rests upon the upper 'tace ot' the portion 26 oit the support 2t and inside ot the block 2T. thus supporting the table so that its under surface is either just out of contact with the upper surlace ot' the block 27 or at least only lightly in contact therewith. This is tor the purpose ot' permittingl the-table 22 to rotate above the block 27 without undue friction thereon.

F or castellating hexagon nuts as shown herein, the table 22 is formed with six nut receiving recesses 29 equally spaced near the periphery of the table. these recesses eX- tending through the table so that nuts fed to them will reSt upon the hloclr or plate 2T. The tahle is also provided at each of these recesses with a nut clamping device such as shown in Fig. 5. This comprises a clamping 35. rlhe piece 34 extends through the nut and in normal position the bolt is retracted from the recess. Surrounding the table 22 on the side where the hereinafter described cutters are located is a cam 36, so positioned that its tapered end 3i (Fig. o) contacts with the piece 34 and forces the latter inwardly so that the slning 33 overcomes the resistance of the spring 3l and presses the bolt 30 firmly in contact with the side of a nut N that has been previously inserted in the recess. This cam 36 retains the bolt 30 in clamped position throughout a part of the rotation of the table 22 or until the particular piece 34 has passed the other end 38 of said cam, when the clamping device automatically unclamps.

The table 22 is intermittently rotated by the well known Geneva movement comprising a star plate 39 having six radial slots 40, an arc shaped surface 41 between them, and an arm 42 having a pin 43 adapted to operate in the slots and a cylindrical plate 44 lapted to operate against the arc shaped surface 4l and having a cut-out portion 45 permitting unlocking` action while. the pin 43 rotates the plate 39 through one-sixth of a revolution. T his movement is well known and .is clearly shownin Figs. l, 2 and 7, and no further description is thought necessary. AThe plate 39 is secured to the lower proj ect`4 ing end of the trunnion 23 of the table 22 as by the nuts 46, and the arm 42 and plate 44 are keyed or otherwise secured upon a shaft 47 arranged. parallel to the axis of the table 22. The pin 43 is made long enough and the periphery of the plate 44 is of sufiicient width to permit tho requirerl amount of reciprocation of the plate Bt) with the table 22 as will be hereinafter described.

The table 22 is reciprocated for feeding by means of a cam 48 mounted upon the shaft 47 above referred to and having a cam groove 49 which co-operates with a pin 50 on the side of the table support 24. rllhis cam groove 49 is formed to give the required lift to the table and it will be seen that there is a positive action both rising and falling and the entire table support and the table are lifted for this feeding operation.

The connection of the cam 48 to the vertical shaft 47 is best shown in Fig. 2 where it will be seen that the shaft 47 is supported in a sleeve 5l which is adjustably mounted in a collar 52 forming part of the frame 2l of the machine. This collar has a detachable annular piece 53 secured to it as by screws 54 and a ring 55 is loosely clamped between the collar 52 and the piece 53 and around the sleeve 5l. rlhe ring is connected to the sleeve 5l by a threaded connection so that upon rotating the ring 55 the sleeve 5l is raised or lowered in the collar 52. At the ripper' end of the sleeve 5l is a ball thrust bearing 56, shown in dotted lines in Fig. 2, and the cam 48 which is keyed to the upper end of the shaft 47 as shown at 57 rests upon this thrust bearing 56 so that the cam is adjusted axially with the axial movement of the sleeve 5l land carries with it the shaft 47 the upper end of which is mounted in a. bearing 47 formed in the frame of the machine. This axial adjustment is obtained manually by turning a cross shaft 5S having a worm 59 in mesh with worm gear teeth 60 formedv on the periphery of the ring 55. This axial adjustment of the cam 48 of course carries with it the table support 24 and consequently the table 22, thus adjusting the upper limitof travel of the latter in its feeding movement.

The cam 48 is provided with a worm gear (il by which it is rotated from a worm 62 on a transverse shaft 63 mounted in suitable bearings in the frame of the machine. By this arrangement the rotation of the cam 48 is in direct timed rotation with the rotation of the table 22 because of the fact that the table rotating mechanism comprising the Geneva movement is operated by the shaft 47 which moves with the cam 48. Thus the cam 48 makes one complete revolution for each one-sixth of a revolution of the table so that there is a complete up and down feeding movement of the table for each period of rest from rotation thereof.

At the right of the machine as shown in Fig. 2, the frame 2l thereof extends upward ly somewhat above the line of the table 22 and supports the cutter mechanism. As shown, there are three cutters or saws 64, G5 and 66 mounted ou parallel. shafts 67, 68 and 69 respectively, each of which is mounted in a pair of separated roller bearings 70 and 7l as shown in section in Fig. 2. lilach of the shafts also has a worm gear 72 arranged between the bearings and a driving shaft 73 is mounted in suitable bearings in the frame directly beneath the gear 72. This shaft 7 3 has worm teeth 7 4 in mesh with the gear 72, this arrangement being shown in Fig. 2 and in dotted lines in Fig. l, and the shaft 73 is directly driven by a pulley 75 operating` through a clutch mechanism 76.

The outer end of the shaft 73 is supported in a bearing 77 in an arm 78 extending out from the frame 2l. i

The upper extension of the frame 2l which supports the critter mechanism fully encloses the cutter shafts and is formed with lOO en oil reservoir 79 shove the shaft 73 and oil holes 80 leed Jfrom this reservoir directly to the gears A Cover 81 is provided for the reservoir endv ev needle vulve 82 :is provided for each olf the openings S0 so that the feed ot oil to the gears een he regelated.` There is also en oil conduit 02E formed in the treme of the machine from the lower part o t the housing' of the shalt 7?, t(ind extending to the hee-ring' 17' for the shaft t? so that excess oil fed to the Qezirs lf2 end 'Ul will r1 in down into the hesrinp; 41T" end on to the geel-s 61 :md 62 sind the @ein 18 so that tl'iose ports er also properly luhrieetr-xfl.

YFor the purpose ol: fliivioe the .shz'ilft 02) end consequently rotating and reoiororeting the work t: hle.- :i train o' nears is provided from the shz'iclt 73 to the shell; 03. :it one sido olf' the machine, es shown :it 85 :md 86 in Fig. 1, the geen: SL11 .being on the shaft (3 und the gear 8G heine)` on the shstt 0B.

1t will he lunderstood that the `cutters 611. and 6G are arranged to opev ste in parallel plenos and are removed. .trom eeeh other sixty degrees oireumierentielly of the table. This is so that each of the eut-ters will ont one slot at e. time in the nuts thet are respectively presented to them and the three slots so out will he sixtyr degrees eport on the nuts.

The nuts ere automatically 'ted to the nmehine by mee-ns ot' the feeding; device shown in Figs. 8 to 11 inclusive and this device is supported from the treme of the machine hy en erin 87. lt comprises :1. magasine 89 of tubular form end errangI d directly over one oi the recesses of the work tzihlo on the opposite side of the table frein where the 'ers er located. The magazine Si. is rehly mede ot en outer cylindrical tehe :i nd :in inner tuhe formed in two pieces split longitudinally to facilitate machining the hemejon interior. This eonstriif. lon is illiis where the l er tiihe is shown :it 89 sind the two-ijieoe ed particularly in Fig. il

inner tnhe :it 90. These inner :ind outer tu are pr .f'erahly pinned together so th t they ere in effect one tiihe.

Ville mereziiie 88 is mounted for long-L '."izdinel r( prooetion in e sleeve 91 which is likewise mounted for longitudinal reciproeetion to n. limited extent in the erin 87 :ihox .terred to. The sleeve 91 ha.' e.` transverse pin opere-ting; in e slot 93 formed in the side ot the magazine 88 to limit the relative movement of its two parte. and the erin S7 has e. transverse pin 9-1 operetingrin :i slot 9F 'Formed in the side of the sleeve 91 lo limit the rolf 've movement between those ports. 11. over p :ite 96 on the upper iff-art ot the :irre 87 end surrounding the ine-resine 'terms en ehiitnient 'for two si rings 97 end 9S, the former o'li which hes lower end. resting' iig-einst e.. coller 99 secured lo the meow/:ine S8 hy the screw 100, and the letter of which, that is the spring 98, hes lower end bearing against the sleeve 91. Thus the springs 97 and. 9S yieldingly retain the magazine 88 sind the sleeve 91 in their lower extreme positions.

rlhe lower part of the sleeve 91 is oontreeted soniewhet where it surrounds the lower end of the infligezine, and e second sleeve 101 is arranged on this lower part of the sleeve 91 and adapted to slide longitudinally thereon. This sleeve 101 is yieldingly retained .in its lowest position hy e. spring .102 mfrenged between :L shoulder 103 on the slemie 101 and shonlder 101 on the sleeve 91. The sleeve 10i. is shown :is Jformed oli two ports 'For convenience oit morenfleotere hut it will be understood that the outer part 105 and the inner p rt 100 elweys niove together. A pin 107 in the sleeve 101 extends into e slot 108 in the lower extension oli the sleeve 91. to liinit the relative movement ety the two sleeves. in underneath view of the magazine and the surroundinga lsleeves is shown in Fie'. 12 and the pin and slot 101v end 108 are also shown therein hy cutting swe-ylperts o' the sleeves.

Reierring to seid l? 19 h oe operated upon by e second inclined sur- 101. rllhese two inleee 11? in the sleeve elined surfaces 115 end 11'( ere so positioned that they will positively roel the dog 110 on its pivot es the sleeve 101 is reciproeeted reletively to the niega-zine 88. The dog- 110 hes :i toe 110 which is adapted to Catch under the nnte N in the` magasine es shown 'een tionlerlj," in .lli 8. i Y

rlfhere erre also 'lltiivotelly mon. 1 't 119 in slots 120 in. ihe lower perm er the .sleeve 91. '.lhese doo-s ire equally spaced around the sleeve :ind :is they ere all elilze operation ol enhY one oit them will be describes dogs 118 has e toe 121 which operates through :i slot 122 formed in the lower end oit the magazine 88 end this dogg' is pivoted slightly above the dog 110 its toe 121 eetehes 'p fisher do gf;

Under the second nut in the mager/,ine insteed'et under the first nut. The dop; 118

'lhe operation oi the nut feeding' devies is iollows: ln Fig. S the table 4its support -/lsre in retreete. of the tehle heine; slightly below the hot-torn oi' the sleeve 101v oli the :ii'eedingi mechanism. ln

Esch oli the A this position ot 'the parts the toe 110 of the dog 110 is under the lowest nut N thereby retaining` the nuts in the magazine. The dogl is held in its position by reason of its finger 116 being against the interior surface of the sleeve 101. The dog 118 has its heel 12aL in the slot so that the dog is retracted.

ln Fig. 9 the table has been moved up` wardly into contact with the sleeve 101 and has pressed the latter upwardly relatively to the sleeve 91 and the magazine, the spring 102 being lighter than either oli the springs 9T and 98 so that the latter two springs hold the magazine and the sleeve 91 iu their lower positions. This relative movement o'l`; the sleeve 101 on the magazine and sleeve 91 causes a change in position oi the dogs 110 and 118. The tformer is turned on its pivot to release the lowest nut in the magazine as shown in said Fig. 9 and the dog 11S is turned on its pivot so that its toe 121 is moved in under the second nut in the magazine thereby retaining all but one of the nuts therein.

ln 10 the table has reached the full upper limit oil its stroke and the upper end oi? the sleeve 101 has been pushedyagainst the shoulder 101 on the sleeve 91, and the table is .in Contact with the lower end oit the magazine itself so that the sleeve 101, the magazine 88, and the sleeve 91 have all been moved upwardly against the action ot the springs 97 and 98. .Howe-ver, as the lower end oit the magazine was in contact with the table in the position shown in Fig. 9, the continued movement of the table moved the magazine relatively to the sleeve 91 until the sleeve 101 reached the shoulder 104, and this relative movement caused the three dogs 118 to move downwardly relatively to the maga zine and push the `first nut in the magazine which had been released by the dog1 110 down into the recess 29 in the table. This position ot the parts is shown in Fig. 10 and after the relative movement of tho maga- Y,zine and the sleeve 91 had ceased by reason oi" the sleeve 101 abutting against the sho ler 104i. all ol the'parts moved up- .ly together to the upward limit oil movement oi" the table.

In the reverse operation the dog 118 releases the nuts which have been held by their toes 121 and the nuts are caught by the toe 110 ot the dog 110 which has again been brought into operative position. The com.- plete operation is then repeated with each reciproca-tion of 'the work table.

The worlr table 22 rotates in the direction orp the arrow 128 in Fig. 1 and the nut feeding magazine 8S therefor is located at some point ahead of the cutters or saws. After the nuts have passed the saws and been operated upon they are released by the cani 80 and in most lases would drop LZ1-assis through an opening 129 formed in the part Q6 of the support 242e. lt is found in practice, however, that the nuts will sometimes stick in the recess due to chips getting into the recesses, and for the purpose ot positively ejecting the nuts from the recesses and cleaning the recesses ot chips an ejecting mechanism is provided. This consists of a hollow pin 130 supported by an arm 131 over the opening 129 where the nished nut rests during one reciprocation of the table. The arm 131 is rigidly mounted upon the frame 21 ot the machine as by the bolts 132, and the pin 130 is connected by z flexible pipe 133 with a pump 13e which may be operated from some moving part of the machine such as by the shaft 135 connected to the shaft 73 hereinabove d scribed. The pump 134 is suitably coimectrA l ith a source ot oil supply so that it will constantly pump a stream oi oil through the pin 130 and upon the table 22.

The operation oit' this device is as follows: lWhen the finished nut reaches a position on the table over the opening 129, ii" it is caught in the reces it will sometimes be freed by the action o; the stream ot oil issuing trom the hollow pin 130. However. ii' this does not irec the nut. the reciprocation olf the table 22 will bring the nut against the lower 1 end of the pin 130and the nut will be posi- 'tively pushed through the recess and through the opening 129, w iere it falls from the machine through the shoot 136. From this shoot the nuts are led to a` suitable receptacle.

Having thus described my invention, what l caim and desire to secure by Letters Patent is:

1. ln a. slotting machine, in combination wth a reciprocating worl: table.v means to eiect a series oi progressive operations upon the work by the reciprocation of said table. a member having a cam groove engaging a part connected to said table ior iii/ositively reciprocating the table both to and lron'i the cutter, and means tor operating said cani groover member. I

2. ln a slotting unugfhine, in combimition, a reciprocating table support, a work table thereon, a` cam arrange. at one side olf the table support and connected to positively move the table both to and from the cutter, means for performing successive operations upon the work by said reciprocation, and means for operating the cam.

3. In a slo'tting machine, in combination, a work table mounted for reciprocation and rotation about an axis, a series ot' cutters arranged for successive operation upon the work as the table rotates, a table support, a cam arranged at one side of the table support and connected to reciprocate it, and means 'for rotating the table and cam.

i. ln a slotting machine, in combination,

a support, a work tablev mounted on said support, a cam arranged at one side ot' the table support and connected to positively reciprocate it, means ttor rotating the table, means `l'or operating the cam, and means for performing successive operations upon the work during said reciprocation.

5. ln a slotting machine, in combination, a vertically reciprocable member, a work table rotatably supported at one end of said member and having a part extending through said member, means at the other ond of said member tor rotating said worlr` table, and means connected to said member intermeiliate its end 'for reciprocating it.

(3. ln a slot-ting machine, in combination, a critter, a n'iovable work table, a cam connectcd to move the table, means for operating the cam, and means for adjusting the cam relative to said operating means to change the relation el" the table to the cutter.

'i'. .ln a slotting` machine, in combination, a cutter, a work table movable toward and from the cutter, a cam connected to move the table and rotatably supported means for adjusting the support for said cam to change the relation between the table and cutter, and means ifor operating` the cam.

8. In a slotting` machine, in combination, a cutter, a vertically reciprocating worlr table, a support ior said table` a rotary cam supported at one side of said support and connected to move the table, means for Vertically adjusting the support for said cam to change the limit of throw of the table and means for rotating the cam.

9. In a slotting machine. in combination, a cutter, a vertically reciprocating worlr table, a support for said table, a rotary cam supported at one side oi said support and connected to mbve the table, means for vertically adjusting` the support for said cam to change the limit of throw of the table relative to the cutter and means coaxial with said adjusting means for rotating the cam.

10. In a slotting machine, in combination, a cutter, a vertically reciproca'ting` work table, a support for said table, a rotary cam supjgiorted at one side of said table support and connected to reciprocate the latter, means for adjusting the cam support parallel to the table inovenicnt to change the throw ol the table relative to the cutter, and means keyed to the cam for rotating` the latter.

11. In a slotting machine, in combination, a movable work support, a cutter for operating on the Work in one position of said support, and means for projecting a stream of liquid against the Work in another position of said support, a nozzle positioned to contact with and positively eject the work in the movement oi the work support.

12. In a slotting machine, in combination,

a vertically reciprocable and rotatable work table, a series oi' rotary saws disposed to cut successive slots in the work, spindles for said saws lying in the same horizontal plane, a lined support tor said spindles, worms for driving said spindles, and a common worm shaft :lor said worms.

13. ln a slotting machine, in combination, a support, a vertically movable and rotatable work table mounted thereon, a series oit rotary saws mounted. adjacent the table and onv spindles in ,lined supporting means, a cam for moving said work table mounted on a vertical axis and fixed against vert-ical movement, worm. gearing for operating` said cani, worin gearing for operating said spindles, and gearing between said worm gearings.

14. In a slotting machine, in combination, a support, a vertically movable and rotatable work table mounted thereon, a series of saws mounted adjacent the table and on spindles in said support, a cam ior moving said work table, parallel shafts connected i'or operating said spindles and cam respectively, and gearing conneetin said shafts.

15. In a slotting machine, in coniibination, a reciprocable and non-rotatable table support, a work table rotatably mounted on said support, rotary cam means connecting with the side of said support for reciprocating said support and the table thereon, and means 'for rotating the work table.

16. ln a slotting machine, in combination, a support, a vertically reciprocable Worlr table mounted thereon to rotate about a vertical axis, a series of three saws on three separate but parallel spindles above the table and lying in the same horizontal plane and sixty degrees apart relative to the axis of said table, a liXed support for said saw spin dles, means for operating said spindles, and gearing from said spindles for operating said table.

17. ln a slotting machine, in combination, a. reciprocable and non-rotatable table support, a work table rotatably mounted on said support, rotary cam means connecting with the side of said support for reciprocating said support and the table thereon, and means for intermittently rotating the work table in time with the reciprocations.

18. ln a slotting machine, in combination, a vertically reciprocable and nOnrotatable table support, a worlr table rotatably mounted thereon and having a part extending through said support, means `for rec1p rocating said support and table, and means operating on said extended part of the table for rotating it.

19. In a slotting machine, in combination, a. support, a. work table mounted thereon for horizontal rotation and vertical reciproca tion, a rotating vertical spindle mounted in the support adjacent the table, cani means between said spindle and table for reciproeatingl the latter, Geneva mechanism be tween said spindle and table, saws and spindles therefor mounted in the support above the table, a driving sha't, gearing` from said shaft to said saw spindles, and `gearing` `from said shatt to said vertical spindlen 20. In a shitting machine` in combination, a rot-ary work 'table havingr a series oit Work receivingrseats, a ivork clamp `tor each seat, and a stationary -am adjacent said table adapted to ogivcrate said clamp and hold it iu clampiiig` position throughout a portion oit the rotation ot said table.

In a slotting machine, in combination, a rotar)7 `work table having' a series ot vwork receiving seats, a work clamp for each seat, a spring for said clamp and a stationary cam adjacent the table to operate said clamp.

22. In. slottingv machine, in combination, a rotary Work table having` a series of Work receiving seats, a Work clamp for each seat and havinga part extendingl beyond the periphery of the table, a spring' for said clamp and a stationary cam arranged adjacent the periphery o1c the table and adapted to contact Withasaid part and operate said clamp.

In a slotting` machine, in combination, a Work table, a blank magazine, blank retaining means and means operated by the table to release said retaining means for feeding` a blank to the table.

211. In a blank feeding device, in combination, a support., a magazine yieldingly held therein, a sleeve at the delivery end of said magazine, and dogs operated by said sleeve to feed the blanks singly.

In a blank feeding device, in combination, a support, a holder slidably mounted in said support, a magazine slidably mounted in said holder, a sleeve slidable on said holder, and dogs operated by said sleeve to feed the blanks from the magazine.

QG. In a blank feeding` device, in Combination, a support, a holder slidably mounted in said support, a magazine slidably mounted in said holder, a sleeve slide-ble on said holder, a dog supported by the magazine, and a dog supported by the holder, said dogs being operated by said sleeve to teed the blanks from the magazine.

27. In a slot-ting` machine, in combination, a vertically reciprocable table support, means preveiiting rotation of said table support, a Work table rotatably mounted on said table support, a rotatable cam mounted With its axis parallel to the axis of said Work table, means for rotatingsaid cam, means connecting said cam and table support whereby the rotation of the cam reciproeates the table support, and means connected to rotate said Work table relatively to the table support.

In testimony Whereorl I aliX my signature.

LE ROY E. JOLLS. 

